Problema Solution

You want to purchase a new car in 6 years and expect the car to cost ​$22000 comma. Your bank offers a plan with a guaranteed APR of 6.5% if you make regular monthly deposits. How much should you deposit each month to end up with ​$22000 comma in 66 ​years?

Answer provided by our tutors

We will use the Sinking Fund formula:

S = R[((1 + i)^n - 1)/i]

where

S = $22,000 is the future value;

R is the periodic payment that we need to find;

i = 0.065/12 is the interest rate per period (since it is monthly deposit);

n = 6*12 = 72 is the number of periods (since it is monthly deposit)

R = S/[((1 + i)^n - 1)/i]

R = Si/((1 + i)^n - 1)

R = (22000*(0.065/12))/((1 + 0.065/12)^72 - 1)

click here to see the calculation

R = $110.64

Each month $110.64 should be deposited to reach the goal of $22,000 in 6 years.